155683728680 has 32 divisors (see below), whose sum is σ = 351120466440. Its totient is φ = 62125566720.

The previous prime is 155683728677. The next prime is 155683728709. The reversal of 155683728680 is 86827386551.

155683728680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 71756479876 + 83927248804 = 267874^2 + 289702^2 .

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4605599 + ... + 4639278.

Almost surely, 2^155683728680 is an apocalyptic number.

155683728680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155683728680 is an abundant number, since it is smaller than the sum of its proper divisors (195436737760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155683728680 is a wasteful number, since it uses less digits than its factorization.

155683728680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245309 (or 9245305 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 155683728680 in words is "one hundred fifty-five billion, six hundred eighty-three million, seven hundred twenty-eight thousand, six hundred eighty".